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Why are you switching polarity to the coils Lee? BTW, with 77 ohms you have plenty of internal resistance to absorb that energy...

Yes but would be thousands of volts if not snubbed like this with a flyback diode. That chuck is no doubt, multiple millihenries of inductance.

yup, the wire will add some resistance which will dissipate the energy more quickly.

Sounds warm and welcoming...

Not zero Jim. Differential transmission adds components which always degrade, not improve on sound quality. If you have long runs of cables, especially in noisy electrical environments, differential can help because it has better common mode rejection capability. But in most short run...

Or die in :-)

Hi Lee If there is an offset in grounds between sending and receiving units, you can attach the receiving ground levels to the Sense lines and it will adjust the ground level of this differential driver to that of the receiver. Most often, these sense lines are left open with no connection.

it is one small 8 pin IC Lee

This is what a differential output looks like...

Is the switch just on off Lee or does it reverse polarity on the chuck? The big, high voltage flyback diode will be on the chuck side of the switch with its cathode pointing to the positive voltage of your supply when switched on. If the switch reverses the polarity on the chuck then we will...

A quick hand schematic sketch would help me tell you where you can stick that fly back diode

And a switch somewhere in that circuit?

Probably Lee if the receiving end has a true differential receiver in it, such as an INA134

So Lee you have to ask yourself when I turn off a DC powered inductor, especially one of this size, what happens. You get a very high voltage flyback when the current is interrupted suddenly. E=L*di/dt When you switch off the PS connection to the chuck you need to provide somewhere for that...

Balanced in but, in reality, single ended out...

Jim do you have the schem for the Aragon you have? Does it have balanced outs?

That would defeat the balanced nature of XLR connections if cold was grounded, it would turn it effectively into a single ended connection.

The Accuphase flips the polarity of both channels, not individually, so they are both either standard or flipped polarity. Just speculating... If your customer desires to bridge his balanced input stereo amplifier for higher power mono output purposes, it would generally require a normal phased...

Gin and Tonic season has arrived here in MA...